[CentOS] Ideas for stopping ssh brute force attacks
danc at bluestarshows.com
Mon Jul 21 21:11:13 UTC 2008
> -----Original Message-----
> From: centos-bounces at centos.org [mailto:centos-bounces at centos.org]On
> Behalf Of Bo Lynch
> Sent: Monday, July 21, 2008 3:43 PM
> To: centos at centos.org
> Subject: [CentOS] Ideas for stopping ssh brute force attacks
> just wanted to get some feedback from the community. Over the last few
> days I have noticed my web server and email box have attempted to ssh'd to
> using weird names like admin,appuser,nobody,etc.... None of these are
> valid users. I know that I can block sshd all together with iptables but
> that will not work for us. I did a little research on google and found
> programs like sshguard and sshdfilter. Just wanted to know if anyone had
> any experience with anything like these programs or have any other advice.
> I really appreciate it.
> Bo Lynch
Just change the default port.
You can also limit the allowed nocks on door with iptables, but changing the
port is much eaieer.
Cleans up the logs real nice.
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